Type-writing machine.



I. L. DEMPSEY.

TYPE WRITING MACHINE. APPLICATION FILM) Amm. 191s.

Patented Nov. 3,1914,

f ji J5 Jaja,

En sTATEs PATENT OFFICE.

ravine n DEMrsEY, or Icaravana, MAnIfLANnhssIGNOR To THE omvnn TYPE- WRITERV COMPANY,V or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

description thereof, reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

. This invention relates to improvements in typewritlng machines, and particularly to mechanism lfor regulating the spacing of the lines of the work.

The object of-the invent-ion is to provide "mechanism of this class by which the spacing of t-he written lines may be -easily and quickly regulated. p

Another object is to provide a mechanism which may be quickly regulated, so that any desired width of spaces between the written lines may be accurately secured. 25

With these and other` objects in view, my invention consists of the following novel f combination' and arrangement of parts,

shown in the accompanying drawings, -set forth in the following description, and specificallypointed out in the claims hereto appended.

' space, or any intermediate space. Fig. 4

is a sectional view, taken on line 4-4 of Fig. 2. p

Referring-to the drawings, the left-hand.

. end-plate 1 of the carriage is therein shown,

-plate l ieee and rotatively secured thereto 1s a co1- the features constituting my invention being located exterior to the same. is mounted in the ordinary manner upon the spindle 3, and carries at its. outer end the usual hard rubber, knurled finger piece 4, which finger piece is Imounted to slide endwise on said spindle. A spring 4a, shown 1n dotted lines in Fig. 2, acts to normally force the said finger piece away from the end 1. At the inner end of the sald finger The platen 2' TYPE-WRITING MACHINE.

Patented Nov. 3, 1914.

aepncation mea April 11, 191s. serial No. 760,373.

feather and spline, I or..- -anyI lot-her preferred means which will lock said c llar` so that it A will rotate with the spindle,a d at the same time allow a sliding movement of the collar thereon; As shown in Fig. 4, the collar 5 1s slidably secured to the spindle 3 by a screw Or membera inserted through said collar and having its inner endprojecting Into' a longitudinal groove 3a in said spindle. L,'Diametrically disposed radial links 6 are pivoted to ears upon said'collar 5, theouter ends of the links being in turn pivopte-d to levers 7, whose fnlcrums 8 are located at the outer ends of oppositely disposed arms 9 upon a collar 10. One of the levers 7 passes through an aperture 7 a in an arm 13, on which is formed, or vto which is attached, tle collar 10, and which turns upon the spind e 3.

grip the eripheral surface of a wheel 12. This wheeIl is provided with a-corrugated or, ro'ughened peripheral surface. This provides a positive gripping surface which is adapted to be engaged by the grippers 11 when the typewriter carriage is being shifted to the right, to bring the same into position for starting to write the next line. As the arms 9 are mounted on the collar 10, the levers 7 which are pivoted to said arms, turn with the arm 13; the engagement of one ofA said levers with said arm 13, serving to afford locking engagement of said lever with said arm. The movement of the car- 'riage effects the, line-spacing movement of the platen, as in an Oliver typewriter,the wheel12 and the means employed for rotating the same being substituted for the platen turning device heretofore used on such typewriter. A

As shown in the accompanying drawing, the arm 13 has at its free or swingingend segmental rack teeth 14, which teeth engage teeth on a segment 15 pivotally supported at 16, in the yusual manner. A lug 17 has pivoted thereto the usual operating'rod 18,

said rod being slidable endwise in a bearing 19 securedto the typewriter carriage, and

adapted for contact with an adjustable stop 20fsecured in a bracket 21 upon a rod 22 )carried by the typewriter frame in the vement vofthe carriage to the right. This mechanism for adjusting the arm 13 is lthat :usually-employed, in anOliver type- The free ends of the levers 7 are prof -i'ided with gripping shoes 11 adapted to Writer, as part of the means for automatically turning the platen for line spacing, each time the carriage is moved or shifted to the right, for starting a new line, and it will be obvious from reference to F ig. 3 that the Contact of the 'rod 18 with the stop 20. will cause the ro ation of the segment l5 and a movement of the arm 13, and when the linger piece -i is pressed toivard the 'end plate and the said arm is locked to the wheel l2 by means of the grippers 1l, the operation of the parts Will eliect a partial rotation of the platen 2.

In order to determine or regulate the eX- tent of rotary movement ot the platen, there is provided upon the plate l a graduated rod 23 arranged generally in a horizontal position at the rear of the arm 13, and constituting an adjustable stop member adapted for limiting the extent of movement of said arm.

Said rod is slidable endwise in bearings 2li and24a on the plate l and has a transverse arm 25, on its forward end, located in the path of movement of the 'arm 13. ln the lower surface of the rod 23, there are pro'- vided three notches 251 adapted to engagea pin'26 upon the plate l. ln order that vthe machine may be sert for either a single, doo.-

hle or triple space, it is only necessary to engage the pin 26 in the proper notch 25a which limits the movement of the arm l,

and consequently determines the extent of rotation oi the platen 2, the arm' 18 being locked to the platen by the shoes l1. A

spring 30 acts dovfnivardl)T on said rod to hold the same in engagement 1with the pin 2G, when the ordinary spacing is used.

ln order to provide .for a variable regulation of line spacing.y the rod 23 is provided. with a seriesof graduations 27, a pointer 284 being mounted on the bearing 24a in juxtaposition to said graduations. This is pro-I vided in order that the machine may be set to write upon ruled paper. irrespective of the Width of the spaces between the equally' spaced lines on the same, This is accomplished by placing the ruled paper on a scale which may be provided upon the front of the ma'chine, said scale corresponding with the gradnations on the rod 23, and setting or adjusting said rod in fixed position on the end plate, to correspond to the spacing between the lines. A. set screw 29, inserted-in vthe bearing 2a; serves to hold the rod 23 in any desired adjusted position, thereby aii'ording variable line-spacing movement in the platen and permitting such line-spacing movement to correspond exactly With the spacing of 'the lines on the ruled sheet. y

The usual pivoted arm 3l is utilized to carry a brake 32 for arresting the movement 'of the Wheel 12. This brakeI is pivoted, at 33, at the outer end of said arm 3l, and consists of a friction shoe 34', the said brake being reversible and having a roller 35 which may use in effecting single, double or triple line p spacing. when the spaces are of iXed or standard Width.

While the .construction shown and described is the preferred embodiment of my invention, it is, of course, understood that changes maybe made in the form, proportion, and minor details of construction, Without departing from the spiritf'or sacricing any oit the advantages'of the invention.

l' claim as my invention: f

l. A line lspacing mechanism;comprising a wheel 4turning with the platen, an endvvise movable linger piece,gripping, means mounted to turn concentrically with the platen, said gripping means being operated by the movement of said linger piece and engaging said Wheel, a movably mounted stop-member for limiting the movement of said gripping means when engaged with vsaid Wheel, means having locking engagement with said stop-member for holding the same in either one of a plurality of predetermined spaced positions for unitary line spacing,` and clamping means acting on said stop-member for holding the same in any desired )osit-ion of adjustment to ailord fractional li' e spacing. y

A line spacing mechanism, comprising a Wheel turning-with the plat-en, an oscillatin'g arm mounted to turn concentrically with the platen, a finger piece, gripping means adapted to be moved into and out of gripping engagement with said Wheel by said finger piece, said gripping means having turning movement with said arm. an end- Wise movable rod connected with and carried by said platen, said rod havingoperative connection with said arm, the latter being'oscillated upon the endwise movement of said rod', a stop located i`n the path of movement of said rod, and an endwise movable bar adapted for variably limiting the movement of said' arm.

3. A line spacing mechanism comprising a Wheel turning With the platen, an oscillating arm mounted concentri'cally with the platen, a finger piece having endwise movement relatively to the platen, .gripping means operated by the movement of said finger piece, said gripping means having' turning movement with the said arm and -heing adapted for gripping engagement with the Wheel, a movably mounted stop member for limiting the movement Aof the said arm, means having locking engagement with said stop-member for holding the same in either one ofa plurality of positions, and

moving with said oscillating arm,

linger piece.

clamping means acting on said stop member for holding the same in any desired position of adjustment. t 4. A line spacing mechanism comprising a Wheel attached to the platen shaft, an oscillating arm mounted on said` shaft, anger piece movable endwise on said shaft, pivotally mounted gripping levers connected and and links connecting said levers with said finger piece. .5. A line spacing mechanism comprising a Wheel attached to the platen shaft, an oscillating arm mounted on said shaft and provided with a rigidly attached collarwhich surrounds the shaft, opposite, radial arms on said collar, levers pivoted to the said radial arms and adapted for gripping engagement with said wheel, a finger piece mounted to slide on the platen shaft, and links connecting the said levers with the said 6. A line spaclng mechanism, comprising a shaft, a platen mounted on said shaft, a

' having notches therein,

wheel mounted on said shaft and turning with said platen, an oscillating arm mounted on said shaft, pivotally mounted gripping levers having turning movement with said arm andbeing adapted for gripping engagement with said Wheel, an endwise movable finger piece, links connecting said ipping levers with said finger piece, means or oscillating said arm, and an endwise adjustable rod located on the carriage frame in the path of movement of said arm.

7. A line spacing mechanism comprising a shaft` a platen'mounted on said shaft, a wheel mounted on said shaft and'turning with said platen, an oscillating arm mounted on said shaft, gripping levers having turn-- ing movement with said arm and being adapted to engage said whee1,an endwise A' -1 movable rod :located on the carriage frame in the path of movement of saidy arm and afixed pin for engagement with said notches, and a spring for holding said pin in engagement with said notches.

' 8. A line spacing mechanism, comprising ashaft, a platen mounted on said shaft, a

'means for-holding lthe said rod in any de.-

sired position of adjustment.

9. A line spacing mechanism, comprising a shaft, a platen mounted on said shaft, a Wheel mounted With said platen, an oscillating arm mount@ on said shaft, gripping levers having turn-- ing movement with said arm and being adapted to engage said wheel, an endwise movable rod located on the carriage framein the path of movement of said arm, means Ahaving interlocking engagement with said lrod for holding the same in a plurality of equally spaced positions for unitary line spacing, and means for holding said rod in any desired position of endwise adjustmen to afford fractional line spacing.

10. A line spacing mechanism, comprising a shaft, a platen mounted on said shaft, a Wheel mounted on said shaft and turning with said platen, an oscillating armmounted on said shaft, gripping-'levers having turning movement with said arm and being adapted to engage said wheel, an endwise movable rod located on thecarriage frame in the path of movement of said arm, said rod having a 'plurality of equally spaced notches, a pin adapted for engagement with either of said notches, and clamping .means acting on said rod to hold the same 1n any In testimony, that I, claim the foregoing as my invention I aiiix my signature in the presence 'of two Witnesses,this irst day of April A. D. 1913.l

, IRVING L@ DEMPsEY.'

desired position Witnesses:y

` DORA M.l DEMPSEY,

S. C. W'Aurnns,

ointer actin on said shaft and turningi 

